MEDICINE HURST VENTRICULAR ELECTROCARDIOGRAPHY - Part 1 doc

... VENTRICULAR ELECTROCARDIOGRAPHY © 19 98 J. Willis Hurst, MD 10 Figures 1. 3A A.Willem Einthoven (18 6 0 -1 927). This Dutch physiologist ... 14 Electrocardiography by J. Willis Hurst and Grattan Woodson, could not have been written without the basic contribution of Robert Grant. [35] Figure 1. 5 Robert Purve...

Ngày tải lên: 14/08/2014, 07:20

... as ± 18 0° (this is the patient's right side), and the upper part of the diagram was designated as -9 0° (Fig. 4 .17 B). The electrical force represented as a vector as shown in Figure 4 .17 B, ... in the endocardium. In fact, part of the ventricular muscle may be depolarized toward the endocardium. Still, the overall wave of depolarization of the ventricles spreads from en...

Ngày tải lên: 14/08/2014, 07:20

... Electrocardiography. New York: McGraw- Hill, 19 57, p. 49.) The initial and terminal mean instantaneous QRS vectors. The frontal plane directions of the 0.0 1- , 0.0 2-, 0.0 4-, 0.0 6-, and 0.08-second ... 19 42; 23:483. 18 . Burger HC, Van Milaan JB: Heart-vector and leads. Br Heart J 19 46; 8 :15 7. 19 . Grant RP, Estes EH Jr: Spatial Vector Electrocardiography. New York: Bl...

Ngày tải lên: 14/08/2014, 07:20

... frontal plane projections of the normal 0.0 1- , 0.0 2-, 0.0 4-, 0.0 6-, and 0.08-second QRS vectors are shown in Figure 5.9. Normally, the initial 0.0 1- to 0.02-second QRS vectors are anterior to the ... left ventricular hypertrophy. Circulation 19 69; 40 :18 5. 14 . Romhilt DW, Estes EH Jr: A point-score system for the ECG diagnosis of left ventricular hypertrophy. Am Hear...

Ngày tải lên: 14/08/2014, 07:20

... correlation. Arch Intern Med 19 88; 14 8(7): 15 45. 16 . Grant RP: Clinical Electrocardiography: The Spatial Vector Approach. New York: McGraw-Hill, 19 57, p. 49. 17 . Romhilt DW, Bove KE, Norris ... of left ventricular hypertrophy. Circulation 19 69; 40 :18 5. 18 . Romhilt DW, Estes EH: Point-score system for the ECG diagnosis of left ventricular hypertrophy. Am Heart J 19 6...

Ngày tải lên: 14/08/2014, 07:20

... vector is -7 0°-to the left and 10 ° to 15 ° posteriorly. There are no Q waves in leads I and V6, and there is no R wave in lead V1. The mean terminal 0.04-second QRS vector is directed -1 10 ° superiorly ... is directed -1 15 ° superiorly and about 10 ° posteriorly. The mean terminal 0.04-second QRS vector is directed -1 23° superiorly and 5° to 10 ° anteriorly. The QRS com...

Ngày tải lên: 14/08/2014, 07:20

... procedures: electrocardiography and vectorcardiography, in Hurst JW, Logue RB (eds): The Heart, Ed 1. New York: Blakiston, 19 66, p 13 8 17 5 • A QRS-complex duration of 0 .10 to 0 .18 second. ... vector. The QRS-T angle may be 18 0°. This 18 9 Figure 9 .13 Apical hypertrophic cardiomyopathy. This electrocardiogram was recorded from a 28-year-old man. The PR interval...

Ngày tải lên: 14/08/2014, 07:20

... myocardial dead zone are listed in Table 11 .2. Examples are shown in Figures 11 .1 through 11 .18 . Figure 11 .1 This electrocardiogram was recorded from a 55-year-old patient with an acute inferolateral ... is directed about 11 5° anterior to the mean QRS vector. This wide QRS-T angle is due either to left 218 Figure 11 .11 This electrocardiogram was recorded from a 47-ye...

Ngày tải lên: 14/08/2014, 07:20

... listed in Table 11 .3 and the causes of pseudoinfarction are listed in Table 11 .4. Electrocardiograms illustrating pseudoinfarction are shown in Figures 11 .20 through 11 .23 Figure 11 .20 This ... 13 .9 and 13 .10 ). 250 Figure 13 .6 This electrocardiogram, showing left anterior-superior division block and terminal T wave inversion in leads V 1 and V 2 , was recorded f...

Ngày tải lên: 14/08/2014, 07:20

... Cardiol 14 (8): 61, 19 88. 12 . Zeppilli P, Venerando A: Sudden death and physical exertion. J Sports Med Phys Fitness 21: 299, 19 81. 13 . DeBusk RF: Techniques of exercise testing. In Hurst JW ... because the ST segment is abnormally long due to hypocalcemia (Fig. 13 .11 ). Figure 13 .11 This tracing was recorded from a 44-year-old woman with advanced renal failure. The dur...

Ngày tải lên: 14/08/2014, 07:20